<template>
  <a-layout>
    <a-layout-content
            :style="{ background: '#fff', padding: '24px', margin: 0, minHeight: '280px' }"
    >
      <a-row :gutter="8">
        <a-col :span="8">
          <p>
            <a-form layout="inline" :model="param">
              <a-form-item>
                <a-button type="primary" @click="handleQuery()">
                  查询
                </a-button>
              </a-form-item>
              <a-form-item>
                <a-button type="primary" @click="add()">
                  新增
                </a-button>
              </a-form-item>
            </a-form>
          </p>
          <a-table
                  v-if="level1.length > 0"
                  :columns="columns"
                  :row-key="record => record.id"
                  :data-source="level1"
                  :loading="loading"
                  :pagination="false"
                  size="small"
                  :defaultExpandAllRows="true"

          >
            <template #name="{ text, record }">
              {{record.sort}} {{text}}
            </template>
            <!--        <template v-slot:doc="{ text, record }">-->
            <!--          <span>{{ getDocName(record.doc1Id) }} / {{ getDocName(record.doc2Id) }}</span>-->
            <!--        </template>-->
            <template v-slot:action="{ text, record }">
              <a-space size="small">

                <a-button type="primary" @click="edit(record)" size="small">
                  编辑
                </a-button>
                <a-popconfirm
                        title="删除后不可恢复，确认删除?"
                        ok-text="是"
                        cancel-text="否"
                        @confirm="handleDelete(record.id)"
                >
                  <a-button type="danger">
                    删除
                  </a-button>
                </a-popconfirm>
              </a-space>
            </template>
          </a-table>
        </a-col>
        <a-col :span="16">
          <p>
            <a-form layout="inline" :model="param">
              <a-form-item>
                <a-button type="primary" @click="handleSave">保存</a-button>
              </a-form-item>
            </a-form>
          </p>
          <a-form :model="doc" layout="vertical" >
            <a-form-item >
              <a-input v-model:value="doc.name" placeholder="名称"/>
            </a-form-item>
            <a-form-item >
              <a-tree-select
                      v-model:value="doc.parent"
                      style="width: 100%"
                      :dropdown-style="{ maxHeight: '400px', overflow: 'auto' }"
                      :tree-data="treeSelectData"
                      placeholder="请选择父文档"
                      tree-default-expand-all
                      :replaceFields="{title: 'name', key: 'id', value: 'id'}"
              >
              </a-tree-select>
            </a-form-item>
            <a-form-item >
              <a-input v-model:value="doc.sort" placeholder="顺序"/>
            </a-form-item>

            <a-form-item >
            <a-button type="primary" @click="handlePreviewContent">
              <EyeOutlined/>内容预览
            </a-button>
            </a-form-item>

            <a-form-item label="内容">
              <div id="content"></div>
            </a-form-item>
          </a-form>
        </a-col>
      </a-row>
      <a-drawer width="900" placement="right" :closable="false" :visible="drawerVisible" @close="onDrawerClose" >
        <div class="wangeditor" :innerHTML="previewHtml"></div>
      </a-drawer>
    </a-layout-content>
  </a-layout>

<!--  <a-modal-->
<!--          title="文档表单"-->
<!--          v-model:visible="modalVisible"-->
<!--          :confirm-loading="modalLoading"-->
<!--          @ok="handleModalOk"-->
<!--  >-->

<!--  </a-modal>-->
</template>

<script lang="ts">
  import { defineComponent, onMounted, ref } from 'vue';
  import axios from 'axios';
  import { message,Modal } from 'ant-design-vue';
  import {Tool} from "@/util/tool";
  import {useRoute} from "vue-router";
  import  E from 'wangeditor';

  export default defineComponent({
    name: 'AdminDoc',
    setup() {
      const route = useRoute();
      const param = ref();
      param.value = {};
      const docs = ref();
      const loading = ref(false);
      const treeSelectData=ref();
      treeSelectData.value=[];
      const columns = [
        {
          title: '名称',
          dataIndex: 'name',
          slots: {customRender: 'name'}
        },
        {
          title: 'Action',
          key: 'action',
          slots: { customRender: 'action' }
        }
      ];

      /**
       * 一级文档树，children属性就是二级文档
       * [{
       *   id: "",
       *   name: "",
       *   children: [{
       *     id: "",
       *     name: "",
       *   }]
       * }]
       */

      /**
       * 数据查询
       **/
      const handleQuery = () => {
        loading.value = true;
        // 如果不清空现有数据，则编辑保h存重新加载数据后，再点编辑，则列表显示的还是编辑前的数据
        docs.value = [];
        axios.get("/doc/all/"+route.query.ebookId).then((response) => {
          loading.value = false;
          const data = response.data;
          if (data.success) {
            docs.value = data.content;
            //如果为空的话，就赋值空数组
            treeSelectData.value=Tool.copy(level1.value) || [];
            //为选择树添加一个"无"
            treeSelectData.value.unshift({id:0,name: '无'});

          } else {
            message.error(data.message);
          }
        });
      };

      /**
       * 将某节点及其子孙节点全部置为disabled
       */
      const setDisable = (treeSelectData: any, id: any) => {
        // console.log(treeSelectData, id);
        // 遍历数组，即遍历某一层节点
        for (let i = 0; i < treeSelectData.length; i++) {
          const node = treeSelectData[i];
          if (node.id === id) {
            // 如果当前节点就是目标节点
            console.log("disabled", node);
            // 将目标节点设置为disabled
            node.disabled = true;

            // 遍历所有子节点，将所有子节点全部都加上disabled
            const children = node.children;
            if (Tool.isNotEmpty(children)) {
              for (let j = 0; j < children.length; j++) {
                setDisable(children, children[j].id)
              }
            }
          } else {
            // 如果当前节点不是目标节点，则到其子节点再找找看。
            const children = node.children;
            if (Tool.isNotEmpty(children)) {
              setDisable(children, id);
            }
          }
        }
      };
      const ids: Array<string>=[];
      const deleteNames: Array<string>=[];
      /**
       * 查找整根树枝
       */
      const getDeleteIds = (treeSelectData: any, id: any) => {
        // console.log(treeSelectData, id);
        // 遍历数组，即遍历某一层节点
        for (let i = 0; i < treeSelectData.length; i++) {
          const node = treeSelectData[i];
          if (node.id === id) {
            console.log("getDeleteIds", node);
            //将目标ID放入数组
            deleteNames.push(node.name);
            ids.push(id);
            const children = node.children;
            if (Tool.isNotEmpty(children)) {
              for (let j = 0; j < children.length; j++) {
                getDeleteIds(children, children[j].id)
              }
            }
          } else {
            // 如果当前节点不是目标节点，则到其子节点再找找看。
            const children = node.children;
            if (Tool.isNotEmpty(children)) {
              getDeleteIds(children, id);
            }
          }
        }
      };

      // -------- 表单 ---------
      /**
       * 数组，[100, 101]对应：前端开发 / Vue
       */
      const docIds = ref();
      const doc = ref();
      doc.value = {
        ebookId: route.query.ebookId
      };

      const editor=new E('#content');
      editor.config.zIndex=0;
      const modalVisible = ref(false);
      const modalLoading = ref(false);
      const handleSave = () => {
        modalLoading.value = true;
        doc.value.content=editor.txt.html();
        axios.post("/doc/save", doc.value).then((response) => {
          modalLoading.value = false;
          const data = response.data; // data = commonResp
          if (data.success) {
            // modalVisible.value = false;
            message.success("保存成功!");
            // 重新加载列表
            handleQueryDoc();
          } else {
            message.error(data.message);
          }
        });
      };

      /**
       * 文档内容查询
       **/
      const handleQueryContent = () => {
        axios.get("/doc/find-content/"+doc.value.id).then((response) => {
          const data = response.data;
          if (data.success) {
            editor.txt.html(data.content);
          } else {
            message.error(data.message);
          }
        });
      };

      /**
       * 编辑
       */
      const edit = (record: any) => {
        //清空富文本框
        editor.txt.html("");
        modalVisible.value = true;
        doc.value = Tool.copy(record);
        handleQueryContent();
        //不能选择当前节点及其所以子孙节点作为父节点，否则树会断开
        treeSelectData.value=Tool.copy(level1.value);
        setDisable(treeSelectData.value,record.id);
        //为选择树添加一个"无"
        treeSelectData.value.unshift({id:0,name: '无'});

      };

      /**
       * 新增
       */
      const add = () => {
        //清空富文本框
        editor.txt.html("");
        modalVisible.value = true;
        doc.value = {
          ebookId: route.query.ebookId
        };
        treeSelectData.value=Tool.copy(level1.value) || [];
        treeSelectData.value.unshift({id:0,name: '无'});
      };

      //删除
      const handleDelete = (id: number) => {
        // 清空数组，否则多次删除时，数组会一直增加
        ids.length=0;
        deleteNames.length = 0;
        getDeleteIds(level1.value,id);
        Modal.confirm({
          title: '重要提醒',
          content: '将删除：【' + deleteNames.join("，") + "】删除后不可恢复，确认删除？",
          onOk() {
            axios.delete("/doc/delete/" + ids.join(",")).then((response) => {
              const data = response.data; // data = commonResp
              if (data.success) {
                // 重新加载列表
                handleQueryDoc();
              } else {
                message.error(data.message);
              }
            });
          }
      })
      };

      const level1 =  ref();
      level1.value=[];
       let categories: any;
      /**
       * 查询所有文档
       **/
      const handleQueryDoc = () => {
        loading.value = true;
        axios.get("/doc/all/"+route.query.ebookId).then((response) => {
          loading.value = false;
          const data = response.data;
          if (data.success) {
            categories = data.content;
            console.log("原始数组：", categories);

            level1.value = [];
            level1.value = Tool.array2Tree(categories, 0);
            console.log("树形结构：", level1.value);

            // 加载完文档后，再加载文档，否则如果文档树加载很慢，则文档渲染会报错
            handleQuery();
          } else {
            message.error(data.message);
          }
        });
      };



      //富文本预览
     const previewHtml =ref();
     const drawerVisible=ref();
     const handlePreviewContent=()=>{
       const html=editor.txt.html();
       previewHtml.value=html;
       drawerVisible.value=true;
     };
     const onDrawerClose=()=>{
       drawerVisible.value=false;
     }

      onMounted(() => {
        handleQueryDoc();
        editor.create();
      });

      return {
        param,
        //docs,
        columns,
        loading,
        handleQuery,
        treeSelectData,
        edit,
        add,
        previewHtml,
        drawerVisible,
        handlePreviewContent,
        onDrawerClose,
        doc,
        modalVisible,
        modalLoading,
        handleSave,
        docIds,
        level1,

        handleDelete
      }
    }
  });
</script>

<style scoped>
  img {
    width: 50px;
    height: 50px;
  }
</style>
